Synthesis and characterization of thiol-polystyrene microsphere and its adsorption properties of thallium

Thallium (Tl) is highly toxic in the environment. In order to solve harm of Tl pollution environment, thiol-polystyrene microsphere (TPM) with good adsorption properties for were prepared this paper. The GAUSSIAN software was used calculate performance TPM on + , and mechanism discussed. thermogravimetric analysis show that chloromethyl polystyrene microspheres (CPM) thiourea as main raw materials has chemical thermal stability. solution 1mg/L, removal rate TPMs 99%, a significant properties. When dosage 0.4L/g, pH 6-10, temperature 5-20 °C, time reaches 640min, thallium-containing water concentration 5mg/L can be treated within national discharge standard (5μg/L). analytical effect 0.5mol/L dilute sulfuric acid reach 99.96%, capacity reduced by only 0.1% after repeated use 4 times, which regeneration performance. modified characterized EDS, FT-IR, Raman spectra XPS, it proved ligated through grafted mercapto group, so adsorb remove from solution. According isotherm kinetic model maximum saturated amount 3.47mg/g, mainly adsorption, membrane diffusion stage control step . results showed could promising adsorbent reusability wastewater